Broadcast pings

Why are all ePMP equipment sending broadcast pings each 5 seconds?

17:25:10.949423 00:04:56:c0:xx:xx - ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 98: 10.33.xx.xx - 255.255.255.255: ICMP echo request, id 5188, seq 52908, length 64
17:25:12.449665 00:04:56:c0:xx:xx - ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 98: 10.33.xx.xx - 255.255.255.255: ICMP echo request, id 5170, seq 51003, length 64

Alex,
Good question.

It is a keep-alive mechanism for DNS server that you can configure on the radio. The little “world” icon on the top right corner turns green or grey depending on whether these “heartbeats” are successful or not.